On October 16th, 2010, Dan Hardy was coming from a loss to Georges St. Pierre in a welterweight title fight after a seven fight win streak.
Carlos Condit was making his 4th UFC appearance and riding a two fight win streak over Jake Ellenberger and Rory MacDonald.
Hardy was trying to prove that he was still a contender at 170 and Condit was trying to prove that he is a force to be reckoned with. Condit ended up proving his worth by landing a vicious left hook which sent Hardy to the mat.
Courtesy of Fuel TV, here is the lead up to that fight as well as the KO in late round one.